Question

我有一个用于检查键盘输入的Java代码。如果特定字符返回True，则有一个循环。对于任何其他角色，else返回false。

如何编写一个代码，用于识别程序选择上述两个（True或False）中的哪一个并打印出来？实例connectionStatus

的布尔值

import java.util.Scanner;

public class BlueTooth3 {
    public boolean connectionStatus;

     boolean connectBlueTooth () {
        System.out.println("Enter connecting code Baby3");
        Scanner keyboard = new Scanner(System.in);
        String conCode = keyboard.next();
        System.out.println("You Entered " + conCode);
        keyboard.close();
        if (conCode.equals ("c")){
        System.out.println(conCode + " Is a true Code");
        System.out.println("This is Boolean " +Boolean.TRUE);

            return connectionStatus;
        } 

        if (conCode.equals ("C")){
            System.out.println(conCode + " Is a true Code");
            System.out.println("This is Boolean " +Boolean.TRUE);

                return connectionStatus;
            }
        else {
            System.out.println( conCode + " Is a false Code" );
            System.out.println("This is Boolean " + Boolean.FALSE);
            return connectionStatus;
        }
        }
     }

Answer 1

除非我闭上眼睛，否则你似乎没有对connectionStatus变量做任何事情。您可以更改该变量的值，以便接收该变量的函数可以相应地执行操作。例如：

    if (conCode.equals ("C")){
        System.out.println(conCode + " Is a true Code");
        System.out.println("This is Boolean " +Boolean.TRUE);
        connectionStatus = true; // means that the code went in this if
            return connectionStatus;
    }
    else {
        System.out.println( conCode + " Is a false Code" );
        System.out.println("This is Boolean " + Boolean.FALSE);
        connectionStatus = false; // means that the code went in this else
        return connectionStatus; 
    }

你的代码应该是这样的：

public void myFunc(){
    System.out.println(connectBlueTooth);
}

这只是简单地打印出connectBlueTooth函数的结果，如果它进入if则该结果为True，如果进入else则为False。

打印if和else循环的布尔输出

1 个答案: